diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 67c902f1b..0c19b3c4b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -25,7 +25,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
 
       - name: Install pytest
-        run: python -m pip install pytest
+        run: python -m pip install pytest pytest-timeout
 
       - name: install MDANSE
         run: (cd MDANSE && python -m pip install .)
diff --git a/MDANSE/pyproject.toml b/MDANSE/pyproject.toml
index cfcfbc62f..324f6b67a 100644
--- a/MDANSE/pyproject.toml
+++ b/MDANSE/pyproject.toml
@@ -58,6 +58,9 @@ MDANSE = ["Chemistry/*.json",
 [project.scripts]
 mdanse = "MDANSE.Scripts.mdanse:main"
 
+[tool.pytest.ini_options]
+timeout = 240
+
 [tool.ruff]
 line-length = 88
 indent-width = 4